137499880 has 144 divisors (see below), whose sum is σ = 376962660. Its totient is φ = 44997120.

The previous prime is 137499871. The next prime is 137499907. The reversal of 137499880 is 88994731.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 137311524 + 188356 = 11718^2 + 434^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1883524 + ... + 1883596.

Almost surely, 2^137499880 is an apocalyptic number.

137499880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 137499880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188481330).

137499880 is an abundant number, since it is smaller than the sum of its proper divisors (239462780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137499880 is a wasteful number, since it uses less digits than its factorization.

137499880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 137499880 is about 11726.0342827403. The cubic root of 137499880 is about 516.1399075783.

The spelling of 137499880 in words is "one hundred thirty-seven million, four hundred ninety-nine thousand, eight hundred eighty".